CN218787881U - Overpressure detection system for pressure gauge - Google Patents
Overpressure detection system for pressure gauge Download PDFInfo
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- CN218787881U CN218787881U CN202223378480.4U CN202223378480U CN218787881U CN 218787881 U CN218787881 U CN 218787881U CN 202223378480 U CN202223378480 U CN 202223378480U CN 218787881 U CN218787881 U CN 218787881U
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Abstract
The application discloses an overpressure detection system of a pressure gauge, belongs to the field of pressure instrument equipment, and solves the problems that no equipment in the prior art carries out detection test on alternating fatigue resistance of the pressure gauge and time and labor are wasted when the test is carried out manually; the overpressure control pipeline is provided with an overpressure control device, and the output end of the overpressure control pipeline (4) is communicated with the input end of the detection pipeline; the alternating fatigue control pipeline is provided with an alternating fatigue control device; the output end of the alternating fatigue control pipeline is communicated with the input end of the detection pipeline. The technical scheme of this application can carry out automatic test, detection efficiency height to the anti alternation fatigue performance of manometer.
Description
Technical Field
The utility model relates to a manometer superpressure detection system belongs to pressure instrument check out test set field.
Background
The pressure gauge is a meter which takes an elastic element as a sensitive element and measures and indicates the pressure higher than the ambient pressure, is very commonly applied and almost extends to all the fields of industrial processes and scientific researches. In the using process of the pressure gauge, fatigue damage may occur particularly under some limit conditions, such as high pressure or continuous high pressure, so that the pressure gauge needs to be subjected to overpressure test before leaving a factory so as to detect the using condition of the pressure gauge under high pressure or continuous high pressure, and the pressure gauge is ensured to have certain overpressure operation capacity.
However, during the operation of the pressure gauge, the measured gas pressure may be periodically changed, and the internal components of the pressure gauge may be damaged due to fatigue of the internal components under the influence of periodically alternating pressure. When the existing pressure gauge is detected, no equipment is used for detecting and testing the alternating fatigue resistance of the pressure gauge, so that the pressure gauge product needing the alternating fatigue test cannot be effectively tested before leaving a factory. Although the alternating fatigue test of the pressure gauge can be performed by manually controlling the pressure change, a large amount of manpower is consumed, and the detection efficiency is extremely low.
SUMMERY OF THE UTILITY MODEL
To the problem that exists among the prior art, the utility model provides a manometer superpressure detecting system can carry out automatic test, detection efficiency height to the anti alternation fatigue performance of manometer.
The technical scheme adopted by the utility model is that an overpressure detection system of a pressure gauge comprises an overpressure air supply source and a detection pipeline; the gas output by the overpressure gas supply source is input into a detection pipeline through a pipeline, the detection pipeline is provided with a plurality of pressure meter interfaces to be detected, and the pressure meter interfaces to be detected are communicated with the detection pipeline;
the pressure gauge overpressure detection system also comprises an overpressure control pipeline, an alternating fatigue control pipeline and a switching valve with multiple outputs;
the switching valve is arranged at the gas source output end of the overpressure gas supply source; two closable output ends of the switching valve are respectively connected with an overpressure control pipeline and an alternating fatigue control pipeline;
an overpressure control line having an overpressure control device; the output end of the overpressure control pipeline is communicated with the input end of the detection pipeline;
an alternating fatigue control pipeline having an alternating fatigue control device; the output end of the alternating fatigue control pipeline is communicated with the input end of the detection pipeline.
Preferably, in the overpressure detection system of the pressure gauge, the overpressure control device comprises an overpressure pressure-increasing control valve and an overpressure pressure-decreasing valve; the overpressure pressure-rising control valve is arranged at the middle section of the overpressure control pipeline; and an overpressure pressure relief pipeline communicated with the overpressure control pipeline is further constructed in the middle section of the overpressure control pipeline, and an overpressure relief valve is installed in the middle section of the overpressure pressure relief pipeline.
Preferably, in the overpressure detection system of the pressure gauge, the detection pipeline is provided with a plurality of detection branches, and the detection branches are connected in parallel; the input end of the detection branch is communicated with the output ends of the overpressure control pipeline and the alternating fatigue control pipeline; each detection branch is provided with a stop valve and a plurality of tested pressure meter interfaces, and the tested pressure meter interfaces are communicated with the detection branches; the stop valve is located the input of detecting branch road.
Preferably, in the pressure gauge overpressure detection system, a pressure retaining valve for closing the interface of the pressure gauge to be detected is arranged at the interface of the pressure gauge to be detected; the output end of the detection branch is provided with a second switching valve, one closable output end of the second switching valve is connected with a pressure switch, and the other closable output end of the second switching valve is connected with an alternating output pipe; and the control output end of the pressure switch is connected with the control input end point of the pressure maintaining valve.
Preferably, in the overpressure detection system of the pressure gauge, the alternating fatigue control device comprises an alternating pressure-increasing control valve, an alternating pressure-decreasing valve and a pressure controller; the alternating pressure rising control valve is arranged at the middle section of the alternating fatigue control pipeline; an alternating pressure relief pipeline communicated with the alternating fatigue control pipeline is further constructed in the middle section of the alternating fatigue control pipeline, and an alternating pressure relief valve is installed in the middle section of the overpressure pressure relief pipeline; the alternating output pipe is provided with a pressure sensor, the signal output end of the pressure sensor is electrically connected with the signal input end of a pressure controller, and the control output end of the pressure controller is respectively connected with the control input end points of the alternating pressure-rising control valve and the alternating pressure-releasing valve.
The beneficial effect of this application lies in:
in the technical scheme of the application, the transmission direction of the pressure gas output by the overpressure gas supply source is switched through the switching valve; when the pressure gas output by the overpressure gas supply source is transmitted to the detection pipeline through the overpressure control pipeline, overpressure testing can be performed on the pressure gauge; when the pressure gas output by the overpressure gas supply source is transmitted to the detection pipeline through the alternating fatigue control pipeline, the alternating fatigue test can be carried out on the pressure gauge. Through the mode, the overpressure detection system of the pressure gauge can perform overpressure test and alternating fatigue test on the pressure gauge. Moreover, in the testing process, the manual operation is rarely needed, and the automation degree is higher.
Drawings
Fig. 1 is a schematic structural diagram of the present application.
Detailed Description
The technical features of the present invention will be further explained with reference to the accompanying drawings and specific embodiments.
As shown in the figure, the utility model relates to a manometer superpressure detection system, including superpressure air feed air supply source 1, detection pipeline, superpressure control pipeline 4, the tired control pipeline of reversal 5 and the diverter valve 3 that has many outputs.
In this embodiment, the overpressure gas supply source 1 may be pressurized using a high pressure gas cylinder or using a gas booster pump.
The switching valve 3 is installed at the gas source output end of the overpressure gas supply source 1. In this embodiment, the switching valve 3 may be a three-way valve, the switching valve 3 has an inlet end and two output ends, the gas enters the switching valve 3 through the inlet end, and one of the output ends can be opened or closed by adjusting the valve core of the switching valve 3.
The air inlet end of the switching valve 3 is connected with the air supply end of the overpressure air supply source 1 through a pipeline, and two closable output ends of the switching valve 3 are respectively connected with the air inlet end of the overpressure control pipeline 4 and the steam inlet end of the alternating fatigue control pipeline 5. The valve core of the switching valve 3 can be adjusted to enable the gas to enter the overpressure control pipeline 4 or the alternating fatigue control pipeline 5. When gas enters the overpressure control pipeline 4, overpressure testing of the pressure meter can be performed, and when gas enters the alternating fatigue control pipeline 5, alternating fatigue testing of the pressure meter can be performed.
The overpressure control line 4 has an overpressure control device, and the output end of the overpressure control line 4 is communicated with the input end of the detection line.
The overpressure control device comprises an overpressure pressure-rising control valve 11 and an overpressure pressure-releasing valve 12, and the overpressure pressure-rising control valve 11 is installed in the middle section of the overpressure control pipeline 4. An overpressure pressure relief pipeline communicated with the overpressure control pipeline 4 is further constructed in the middle section of the overpressure control pipeline 4, and an overpressure pressure relief valve 12 is installed in the middle section of the overpressure pressure relief pipeline.
The detection pipeline is provided with a plurality of detection branches 6, and the detection branches 6 are connected in parallel; the input end of the detection branch 6 is communicated with the output ends of the overpressure control pipeline 4 and the alternating fatigue control pipeline 5; each detection branch 6 is provided with a stop valve 7 and a plurality of detected pressure meter interfaces 2, and the detected pressure meter interfaces 2 are communicated with the detection branch 6; the stop valve 7 is located at the input end of the detection branch 6.
The interface 2 of the pressure gauge to be measured is provided with a pressure retaining valve 8 for closing the interface 2 of the pressure gauge to be measured, and the pressure retaining valve 8 can be an electromagnetic valve. And a second switching valve 9 is installed at the output end of the detection branch 6, one closable output end of the second switching valve 9 is connected with a pressure switch 10, and the other closable output end of the second switching valve 9 is connected with an alternating output pipe 13. The normally open contact of the pressure switch 10 is connected in series with the valve body closing control circuit of the pressure retaining valve 8. The pressure switch 10 is a pressure adjustable control switch.
When the pressure gauge is subjected to overpressure test, the medium input end of the pressure gauge to be tested is installed on the pressure gauge interface 2 in a threaded connection mode. According to the upper pressure limit required for overpressure testing, the overpressure pressure is set as the output pressure value of the overpressure air supply source 1 end, and the overpressure pressure is set as the action pressure of the pressure switch 10. And switching the valve core of the switching valve 3, so that the output of the switching valve 3 is switched to the overpressure control pipeline 4, rotating the valve core of the switching valve II 9, so that the output of the switching valve II 9 is switched to the pressure switch 10, and opening the overpressure pressure-rising control valve 11, so that the high-pressure gas output by the overpressure gas supply source 1 is output to the tested pressure meter interface 2 of each detection branch 6 through the overpressure control pipeline 4, and then enters the tested pressure meter. When the pressure at the pressure switch 10 reaches the action pressure, the switch end of the pressure switch 10 acts and is conducted, the valve body closing control circuit of the pressure retaining valve 8 is conducted, and the pressure retaining valve 8 is closed to retain the pressure of the measured pressure meter.
In the embodiment, the pressure gauge overpressure detection system can also have a timing alarm function, overpressure time is preset in advance, after overpressure timing is reached, the equipment prompts overpressure completion through the audible and visual alarm, and an operator can judge whether an overpressure product meets requirements according to a preset pressure value.
The alternating fatigue control pipeline 5 is provided with an alternating fatigue control device, and the output end of the alternating fatigue control pipeline 5 is communicated with the input end of the detection pipeline.
The overpressure control means comprises an overpressure pressure-rising control valve 11 and an overpressure pressure-relief valve 12. The overpressure pressure-relief control valve 11 is installed at the middle section of the overpressure control pipeline 4, an overpressure pressure-relief pipeline communicated with the overpressure control pipeline 4 is further constructed at the middle section of the overpressure control pipeline 4, and an overpressure pressure-relief valve 12 is installed at the middle section of the overpressure pressure-relief pipeline.
The alternating fatigue control means includes an alternating pressure-increasing control valve 14, an alternating pressure-decreasing valve 15, and a pressure controller 16. The alternating pressure-relief control valve 14 is installed in the middle section of the alternating fatigue control pipeline 5, an alternating pressure-relief pipeline communicated with the alternating fatigue control pipeline 5 is further constructed in the middle section of the alternating fatigue control pipeline 5, and an alternating pressure-relief valve 15 is installed in the middle section of the overpressure pressure-relief pipeline. The alternating output pipe 13 is provided with a pressure sensor 17, the signal output end of the pressure sensor 17 is electrically connected with the signal input end of a pressure controller 16, and the control output end of the pressure controller 16 is respectively connected with the control input end points of an alternating pressure-increasing control valve 14 and an alternating pressure-reducing valve 15. The pressure sensor 17 is a dual-output pressure sensor, and two output ends perform output actions under different pressures. The pressure controller 16 is optionally a valve controller with multiple control outputs.
When the alternating fatigue test is needed, the pressure gauge to be tested is installed on the interface 2 of the pressure gauge to be tested of the detection branch circuit 6. The highest pressure value in the alternating fatigue pressure test is set as the output pressure value of the overpressure air supply source 1 end, and the highest upper limit pressure and the lower limit pressure in the alternating fatigue pressure test are set as the action pressures output by the pressure sensor 17. The valve core of the switching valve 3 is switched to switch the output of the switching valve 3 to the alternating fatigue control pipeline 5, and the valve core of the switching valve II 9 is rotated to switch the output of the switching valve II 9 to the alternating output pipe 13. And opening the alternating pressure-rising control valve 14, so that the high-pressure gas output by the overpressure gas supply source 1 passes through the fatigue-variable control pipeline 5, is output to the tested pressure meter interface 2 of each detection branch 6, and then enters the tested pressure meter.
When the pressure at the pressure sensor 17 reaches the highest upper limit pressure in the alternating fatigue pressure test, one path of output signals of the pressure sensor 17 outputs control voltage to the pressure controller 16, and the pressure controller 16 controls the alternating pressure relief valve 15 to open for pressure relief, so that the pressure in the pipeline is reduced. When the pressure in the pipeline is reduced to the lower limit pressure, the other path of output signal of the pressure sensor 17 outputs control voltage to the pressure controller 16, the pressure controller 16 controls the alternating pressure relief valve 15 to be closed and keeps the alternating pressure relief valve 14 open, and the pressure in the pipeline is increased. Repeating the steps for a period of time, and carrying out alternating fatigue test on the pressure gauge to be tested. And after the alternating fatigue time reaches a set value, the equipment is prompted to finish through an audible and visual alarm.
In this embodiment, the pressure sensor 17 and the pressure switch 10 are both disposed at the output end of the detection branch 6, and when the pressures at the pressure sensor 17 and the pressure switch 10 reach the set pressure, the pressures of all the pressure gauges to be detected can reach the set pressure. Compared with the method that the pressure sensor 17 and the pressure switch 10 are arranged at the middle section or the input end of the detection branch 6, the method of the embodiment can make the pressure of all the pressure gauges to be detected uniform.
Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art should also understand that the changes, modifications, additions or substitutions made within the scope of the present invention should belong to the protection scope of the present invention.
Claims (5)
1. An overpressure detection system of a pressure gauge comprises an overpressure air supply source (1) and a detection pipeline; the gas output by the overpressure gas supply source (1) is input to a detection pipeline through a pipeline, the detection pipeline is provided with a plurality of tested pressure meter interfaces (2), and the tested pressure meter interfaces (2) are communicated with the detection pipeline; the method is characterized in that: the device also comprises an overpressure control pipeline (4), an alternating fatigue control pipeline (5) and a switching valve (3) with multiple outputs;
the switching valve (3) is arranged at the gas source output end of the overpressure gas supply source (1); two closable output ends of the switching valve (3) are respectively connected with an overpressure control pipeline (4) and an alternating fatigue control pipeline (5);
an overpressure control line (4) with overpressure control means; the output end of the overpressure control pipeline (4) is communicated with the input end of the detection pipeline;
an alternating fatigue control line (5) having an alternating fatigue control device; the output end of the alternating fatigue control pipeline (5) is communicated with the input end of the detection pipeline.
2. The pressure gauge overpressure detection system of claim 1, wherein: the overpressure control device comprises an overpressure pressure-rising control valve (11) and an overpressure pressure-releasing valve (12); the overpressure pressure-rising control valve (11) is arranged at the middle section of the overpressure control pipeline (4); an overpressure pressure relief pipeline communicated with the overpressure control pipeline (4) is further constructed in the middle section of the overpressure control pipeline (4), and an overpressure relief valve (12) is installed in the middle section of the overpressure pressure relief pipeline.
3. The pressure gauge overpressure detection system of claim 1, wherein: the detection pipeline is provided with a plurality of detection branches (6), and the detection branches (6) are connected in parallel; the input end of the detection branch (6) is communicated with the output ends of the overpressure control pipeline (4) and the alternating fatigue control pipeline (5); each detection branch (6) is provided with a stop valve (7) and a plurality of tested pressure meter interfaces (2), and the tested pressure meter interfaces (2) are communicated with the detection branch (6); the stop valve (7) is positioned at the input end of the detection branch (6).
4. The pressure gauge overpressure detection system of claim 3, wherein: a pressure retaining valve (8) for closing the interface (2) of the pressure gauge to be measured is arranged at the interface (2) of the pressure gauge to be measured; the output end of the detection branch (6) is provided with a second switching valve (9), one closable output end of the second switching valve (9) is connected with a pressure switch (10), and the other closable output end of the second switching valve (9) is connected with an alternating output pipe (13); and the control output end of the pressure switch (10) is connected with the control input end point of the pressure retaining valve (8).
5. The pressure gauge overpressure detection system of claim 4, wherein: the alternating fatigue control device comprises an alternating pressure-increasing control valve (14), an alternating pressure-reducing valve (15) and a pressure controller (16); the alternating pressure rising control valve (14) is arranged at the middle section of the alternating fatigue control pipeline (5); an alternating pressure relief pipeline communicated with the alternating fatigue control pipeline (5) is further constructed in the middle section of the alternating fatigue control pipeline (5), and an alternating pressure relief valve (15) is installed in the middle section of the overpressure pressure relief pipeline; pressure sensor (17) are installed to alternating output tube (13), and the signal output part of pressure sensor (17) is connected with the signal input part electricity of pressure controller (16), and the control output part of pressure controller (16) is connected with the control input end point of alternating pressure-increasing control valve (14), alternating pressure-reducing valve (15) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223378480.4U CN218787881U (en) | 2022-12-15 | 2022-12-15 | Overpressure detection system for pressure gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223378480.4U CN218787881U (en) | 2022-12-15 | 2022-12-15 | Overpressure detection system for pressure gauge |
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| Publication Number | Publication Date |
|---|---|
| CN218787881U true CN218787881U (en) | 2023-04-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223378480.4U Active CN218787881U (en) | 2022-12-15 | 2022-12-15 | Overpressure detection system for pressure gauge |
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| CN (1) | CN218787881U (en) |
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- 2022-12-15 CN CN202223378480.4U patent/CN218787881U/en active Active
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